1. (informal) an adult whose interests and behaviour follow youth culture; someone who hasn't fully grown up

Derived forms: adultescents

• unmake
• unmalicious
• unmalleability
• unmalleable
• unmalted
• unman
• unmanageable
• unmanageableness
• unmanageably
• unmanful
• unmanfully
• unmanlike
• unmanliness
• unmanly
• unmanned
• unmannered
• unmannerly
• unmapped
• unmarked
• unmarketable
• unmarred
• unmarried
• unmarried man
• unmarried woman
• unmask